A man who tried to illegally enter the White House in March was killed Tuesday after stabbing a sheriff in court, CNN reports.

Curtis Smith, 34, entered the Chester County Justice Center in West Chester, Pennsylvania armed with a knife. Witnesses claim Smith was focused on a sheriff deputy as he bypassed security. Screaming “I’m going to get you,” Smith slashed at the sheriff. Another deputy shot Smith after the attack. He was administered CPR, but was pronounced dead at a local hospital.

Smith was previously on police radar for climbing an outer White House fence in March. The suspect, who happened to be one of three jumpers in that month alone, told police he wanted to send a message to President Barack Obama. He signed a release that he would not return to the area.

West Chester County District Attorney Tom Hogan released a statement on the condition of the wounded deputy.

“The Sheriff’s Deputy who was attacked suffered knife wounds to his hand and arm. The Sheriff’s Deputy was transported to Chester County Hospital and then flown to a trauma unit. The Sheriff’s Deputy is in stable condition. Smith was administered first aid on the scene by Chester County Deputy Sheriffs and Emergency Responders. Smith was transported to Paoli Memorial Hospital where he was pronounced dead,” Hogan said.

The Coatesville, Pennsylvania native didn’t have a court date in West Chester, leaving police with more questions than answers regarding the attack.